System for regulating mechanical stokers for steam-generators



. T. M. WILKINS. SYSTEM FOR HEGULATING MECHANICAL STOKERS FOR STEAM GENERATORS. APPLICATION FILED-APR. I6, 1919.

1,395,377. Patented Nov. 1,1921.

To ATMOSPHERE siren s'ra'rss PATENT oFFicE;

WHEREAS M. VIILKINS, D1? EASE. BANDGL'PH, NLYEV YORK, ASSIGNOR OF ONE-HALF 'lO JQHN EV. STDRKE, GF ERIE, PENNSYLVAIEIA.

NICAL S'IQKE" i3 fiTlElliM-GENERATQRS.

a may f r 31.636 36 4.

Specification of Letters Eetcnt.

Patented Nov. 1, 1921.

Application filed April 16, 1919. Elerial 130. 230,831.

S stems for lie ulatin lvlecha nical Stokers' for EEteam-Generators; and 1 do hereby declare the following to be a full, clear, and exact description or the-invention, such as will enable others skilled in the art to which appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, formingpart of this specification.

invention relates to a system for regulating mechanical stokers for steam generators, and consists substantially in so cornhining a plurality of pressure controlled valves h atthe supply of fuel to the furnace fire of a steam generator is automatically controlled and the supply or steam generated eiieotu'ally regulated. I

The features of my invention are hereinaft described and pointed out and are illusted in the accompanying drawings, in which ere 1, is a diagrammatic drawing illustlilelllg any invention.

2, is a side elevation of a detail of the F? 3, is a longitudinal section of the ihe line 2 in 2. ii 4:, is transverse centr 1 section of some.

Fig, 5, is a view in elevation of one of the valv s, ally in section, of my invention. in iese drawings A indicates steam sup ply pipe leading from a steam generator {not shown) to a steam engine, or other po' of use (not shown). Suitably connected With the supply pipe A are steam conducting pipes A, A and A as may be desire The conductor pipe A leading to a pressure controlled valve B, conductor pipe A leading" to a pressure controlled valve B, and the pipe I to a pressure con trolled valve B said valves are each pro vidcd with niethanisnis C. and adapted actuate said valves as hereinafter described valves and mechanism are hown and hell in U, S. Letters-Patent o. 1.199,- issued to me October 3, 1916. and l l vows-Perr er llo. issued to me Eli February 18, 1919, so that detailed description of the construction and operation thereor". is not necessary.

Connected to the lower end of the conductor pipe A is a reducing nipple a, having a longitudinal opening a'-atherethrough the portion at a being reduced, as shown in F 1g. 3, so that but small volume of steam will low therethrough with, relation to the volume which can flow through the valve 13 when the same is opened. This nipple a is also provided with a lateral opening in which a pipe D is secured, as shown on Fig. The nipple a. is secured in the intake side of the valve B, and from said valve a pipe E leads to'the atmosphere.

From the conductor A, or other suitable point, a conductor F leads-to the pressure controlled mechanism C which actuates the valve B so that's decrease of pressure in the steam main A is communicated through the pipe F to the pressure controlled mechanism C of the valve B, thereby causing; said valve to open and'permit' the compressed steam in the nipple a and connected pipe D, to esca e to the atmosphere.

The pipe 3) l ads to the pressure controlled mechanism C of the valve B, which has its intake side communicating with the steam main through a conductor pipe A From the other side of the valve B a conductor leads to a valve E controlled by a governor mechanism a ofordinary construction, and the .co to a fan engine or other mdgtor (not shown) the speed of which motor is controlled by the action of said governor e. Preferably I connect a branch pipe 6- with the pipe E between the valve B or B as the case may be, and the valve E and lead the sameto a cylinder and piston mechanism G for operating a damper G in the smoke flue G? of the boiler furnace not; shown} .so that when. the pressure in the pipe D 616- creases, the mechanism C opens the valve 1 and steam flows therethrough t0 the fan engine, and simultaneously 'actuates the cylinder and piston mechanism to open the damper G, as shown by broken lines, and in like manner a decrease of pressure in the pipe D permits the pressure controlled mechanism C to open the valve 13 thus permitting steam to flow therethrough to the overnor mechanism e of a stolrer engine, so

that simultaneously with the opening: of

I damper G and speeding up of the fanengine (not shown) the movement of the stoker mechanism will be accelerated, which acceleration will. continue until the pressure in the steammain A and conductor A operates the pressure controlled mechanism 0 to close the valve B so thatsteam which flows through the restricted opening a instead 'i'vhich permits a minimum of steam to flow therethrough suflicient in volume to keep the engines, connected therewith, turning over. The valve B is not provided with such an opening. The number of regulating valves B and B connected with the pipe D may be increased, if desired, as the valve B may be used as a master valve for an indefinite number of stoker engines; as the greater the number of stokerengines used, the lower will be the percentage of steam wasted through the pipe E for each stoker. This system permits of an instantaneous unloading of the pressure holding the valves 13' and B closed by reason of a small reduction of pressure in the steam main A, thereby causing a quick acceleration of the engines connected with said valves, while the time re uired to build up the pressurein the pipe by reason of the restricted opening a in the nipple a causes a gradual diminishing of speed of said engine, until they are supplied with steam only through the restricted openings H in said valves. The operation of the damper mechanism is such that when the governor 0 causes the valve E to close, the steam flows from the pipe E through the pipe 6 to the cylinder A and causes the damper G to open in proportion to the dos ing of the governor controlled valve E".

Having thus fully illustrated and described suitable mechanism for embodying my invention Ido not desire to be limited to the exact construction and arrangement of the parts thereof, herein shown and dc scribed, as many changes can be made therein without departing from the scope of my invention; therefore what I claim as new and desire to secure by Letters-Patent, is 2-- 1. A steam conductor leading from a suitable source of supply to an engine, a valve in said conductor,-fluid controlled mechanism for actuating said valve, and mechanism controlled by the fluid pressure in said steam conductor adapted to relieve the pressure in the fluid controlled mechanism controlling said valve.

2. In a system for regulating mechanical conductor to control the flow of steam therethrough, fluid controlled mechanism'to ac- .tuate said valve, a fluid supply pipe leading from said steam conductor to said fluid controlled mechanism havingla restricted passage therein through which the fluid passes to said mechanism, and means controlled by changes in pressure in said steam conductor to unload the pressure in said fluid supply pipe whereby said valve is instantly opened.

3. In an apparatus of the class described, a steam main, a steam conductor leading therefrom to the atmosphere, a valve therein, fluid controlled mechanism to actuate said valve, a pipe connected therewith and communicating with said steam main whereby said fluid controlled mechanism may be actuated to open and close said valve by reason of variations of pressure in said steam main,

a nipple in said steam conductor having'a restricted o )enmg therein between said conductor and Saul valve, another steam conductor leading from said steam main to an engine, a valve in said steam conductor to control the flow of steam to said engine,

fluid actuated mechanism to open and close said valve, and a fluid supply pipe leading from said mechanism and connected to said nipple at apoint between said restricted opening therein and said first mentioned valve, whereby the fluid pressure in said fluid supply pipe will be relieved upon the opening of said first mentioned valve.

4. In an apparatus of the class described, a plurality of steam actuated motors, steam conductors for supplying steam thereto, regulating valves in said conductors, fluid actuated mechanism adapted to open and close each of said regulating valves, a fluid supply pipe leading from each of said fluid actuated mechanisms to a nipple having a restricted steam passage therein, 'a valve housing connected to said nipple and leading to the atmosphere, a valve therein adapted to open andclose the passage therethrough, a fluid controlled mechanism to actuate said valve, a fluid supply pipe connected therewith communicating with said steam main, whereby, by reason of variations of pressure 1n said steam main, said last mentioned valves will be opened to relieve the fluid pressure in said fluid supply pipes and fluid controlled mechanisms connected therewith and permit the regulating valves operated thereby to be opened until the pressure in said steam main is increased sufficiently to cause the closing ofsaid first mentioned valve, and fluid pressurein said fluid supply pipes is increased sufliciently to close said regulatling valves. i

5. In an apparatus of the class described, a regulating valve, pressure controlled mechanism adapted to actuate said valve, a steam conductor leading to said valve and thence 6 a motor, to be actuated, a gavel-nor acfuated valve in said Conductor letween said regulating valve and said 11101101 a damper operating mechanism, a steam sup-. ply pipe leading therefrom to a point in .aaid. conductorb-etween said. regulating 'vali said governor actuated valve, and medianism controlled in the source of steam supply to pressure in said pre 3 nism and zzllmv spell.

in testimony I; 

